I know the i5 661 together with a Q57 mainboard will support remote KVM. Are there any i7 processors that also support this? And another question: remote KVM does mean I don't need any user interaction to remotely startup pc and login?

KVM Remote Control is supported on some i7 processors. Take a look at the KVM remote control section in our Technology Reference guide - there is some good info there: http://communities.intel.com/docs/DOC-2713. Here is an excerpt that you will be interested in: